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Isolated pontine infarction (IPI) is the main type of acute brainstem infarction. Due to the application of high-resolution MRI, the research on the etiology of IPI has gradually increased in recent years. This article reviews the latest research progress on the characteristics of basilar artery plaques and disease progression mechanisms of IPI, aiming to provide reference for the etiology research of IPI.
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The root and canal anatomy of maxillary first molar is very complicated. The incidence of having two canals in the mesiobuccal root of maxillary first molar is higher than that in its distobuccal root. This article described a maxillary first molar with five root canals, including two canals in mesiobuccal and distobuccal roots.
Subject(s)
Dental Pulp Cavity , Maxilla , Humans , Molar , Tooth RootABSTRACT
Objective To investigate the safety and feasibility of minimally invasive stealth lateral release operation in the treatment of chronic anal fissure . Methods Clinical data of 42 patients with chronic anal fissure who underwent minimally invasive stealth lateral release from May 2012 to May 2014 was analyzed retrospectively .We use the homemade fine steel wire to pierce into the sphincter ditch with a distance from the anus of 1 cm, and put the steel wire out above the dentate line .Then the wire was took out from the other edge under the skin through the needle of bobbin .After the needle was fixed by an assistant , the free end of the steel wire was pulled quickly to cut the internal sphincter tissue instantly . Results All the 42 patients were successfully treated and discharged without complications .The recovery time was in 7 -14 d, with an average of 9 d.The healing standards included disappeared symptoms and totally healed wound .All the patients were followed up for 3-6 months, with an average of 4 months.No recurrence was found . Conclusion Minimally invasive stealth lateral release in the treatment of chronic anal fissure is safe and feasible, with many advantages such as simple performance , reliable curative effect, fast recovery time, and less postoperative complications .
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<p><b>OBJECTIVE</b>To investigate the expression of high mobility group box 1 (HMGB1) in gingival tissues of chronic periodontitis.</p><p><b>METHODS</b>Human peripheral blood mononuclear cells(PBMC) were stimulated with 1 microg x mL(-1) lipopolysaccharide (LPS) for 24 h or 48 h. Expression and release of HMGB1 were checked by immunofluorescence and enzyme-linked immunosorbent assay (ELISA), respectively. PBMC were stimulated with 100 ng x mL(-1) HMGB1 or 50 ng x mL(-1) tumor necrosis factor-alpha (TNF-alpha), the expressions of TNF-alpha and HMGB1 in the supernatant were studied by ELISA. Gingival tissues and gingival crevicular fluids (GCF) were collected from patients and healthy people. Expression of HMGB1 in gingival tissues and GCF was studied using immunofluorescence and ELISA, respectively.</p><p><b>RESULTS</b>HMGB1 was translocated from nucleus to cytosol in PBMC after LPS stimulation for 24 h. The content of HMGB1 in the supernatant from stimulated cells was significantly higher than that from unstimulated cells after 48 h (P < 0.01). HMGB1 was released by PBMC in response to TNF-alpha stimulation, it also stimulated PBMC to release TNF-alpha (P < 0.01). Translocation of HMGB1 from nucleus to cytosol was also found in infiltrated cells in gingival tissues from patients, and HMGB1 in GCF from patients was significantly higher than that from healthy people P < 0.01).</p><p><b>CONCLUSION</b>The results suggest that HMGB1 may play an important role in the pathological progress of chronic periodontitis.</p>
Subject(s)
Humans , Male , Chronic Periodontitis , Gingiva , HMGB1 Protein , Leukocytes, Mononuclear , Tumor Necrosis Factor-alphaABSTRACT
To discuss the actuality of dental therapists'cultivation,put forward the new educational mode on the dental therapist of the technological academy,and solve the urgent need of dental therapist.